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Security Bulletin: IBM QRadar SIEM is vulnerable to KDC Spoofing (CVE-2019-4545)

Security Bulletin


IBM QRadar SIEM when configured to use Active Directory Authentication may be susceptible to spoofing attacks.

Vulnerability Details

CVEID:   CVE-2019-4545
DESCRIPTION:   IBM QRadar SIEM when configured to use Active Directory Authentication may be susceptible to spoofing attacks.
CVSS Base score: 7.5
CVSS Temporal Score: See: for the current score.
CVSS Vector: (CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

IBM QRadar SIEM 7.4.0 - 7.4.1 GA

IBM QRadar SIEM 7.3.0 - 7.3.3 Patch 4


Workarounds and Mitigations

This vulnerability can be mitigated by switching your configuration to LDAP based authentication which you can follow the steps for in the following technical note:

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This vulnerability was reported to IBM by Yoav Iellin, Yaron Kassner, Dor Segal and Rotem Zach from Silverfort.

Change History

07 Oct 2020: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.


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Document Location


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Document Information

Modified date:
08 October 2020